Hi, everyone:
A rectangular plate, simply supported at four edges, subjected to a partial load- a uniformly distributed pressure over a round area at the plate center. What is the analytical solution for the plate deflection?
The Micromechanics of Materials group at the Zernike Institute for Advanced Materials in the Netherlands is looking for a qualified PhD student to unravel irradiation-induced embrittlement in nuclear materials. A detailed description can be found in the attachment. Ideally, candidates have an MSc degree in mechanical or nuclear engineering, (applied) physics, material science or a related field, but holders of a BSc with the highest ranks may also be considered.
Apply before it's too late: June 1.
Hi readers,
This is MATLAB code that was written by myself and collaborators that we've sought to make available to the wider research community. The program is intended to track the displacements of micropatterned dots on a substrate in a similar manner to that performed by Maloney et al. in "Influence of Finite Thickness on cellular adhesion-induced deformation of an compliant substrata". Physical Review E. 2008.
Creep can be characterized as the result of a solid material that is slowly and permanently deformed under the influence of stress. Deformation results from the consistent stress below the yield strength of the material. The amount of applied stress and its duration can eventually lead to the failure of the given material. Ultimately, it is for this reason that Nanoindentation creep measurement provides crucial information to study material behavior.
I have attached notes prepared to better understand locking. This might be useful to FEM guys....
Hi all,
I want to set up a critical shear strain - normal stress criterion, in UMAT by prof. Huang. For the strains it is easy to get a critical strain along a slip plane; but for the stresses the notation is quite weird. It is not the same! See below:
C Array STATEV:
C 3*NSLPTL+1 - 6*NSLPTL : current components of normals to slip
We welcome applications for a fully funded 4-year PhD position in the field of computational mechanics and materials science. Further details in the attachment.
Hi iMechanica,
I want to start a discussion on the current status of DEM modelling of granular media. I know that Luding has published many papers in this area. Please add to the current research on granular flow modelling like viscoplasticity, hypoplasticity etc and the numerical DEM methods.
Based on an extensive search across the periodic table utilizing first-principles density functional theory, we discover phosphorus to be an optimal surface electromigration inhibitor on the technologically important Cu(111) surface-the dominant diffusion pathway in modern nanoelectronics interconnects. Unrecognized thus far, such an inhibitor is characterized by energetically favoring (and binding strongly at) the kink sites of step edges. These properties are determined to generally reside in elements that form strong covalent bonds with substrate metal atoms.
Hello
I want to solve a system of partial differential equations (Navier-Stokes with continuity and momentum equations in one-dimension) using a finite element routine. I have several questions:
1. How to couple the two equations (continuity and momentum) into a single system with a single solution.
2. Apart from time, I have two unknowns: volumetric flow rate (Q) and pressure (p). Should I consider these as two degrees of freedom on each node in the domain.
